Fire-alarm.



PATENTED AUG. 14, 1906.

A- E. WATTS. FIRE ALARM.

APPLIOATION FILED JULY 13, 1905.

15 E. ltaiis,

Inventor,

Witnesses:

Attorneys part of this application, I have illustrated one form of embodiment of my invention, in

ALFRED EDWARD wins, or wATrsBURe, cANAnA. FIRE-ALARM.

Specification of'Letters Patent.

Patented Aug. 14, 1906.

Application filed July 13, 1905. Serial No. 269,439.

To all whom it mag/concern:

Be it known that I, ALFRED EDWARD WATTS, a subject of the King of England, residing at Wattsburg, in the district ofKootenay, in the Province of British Columbia, Dominion of Canada, have invented certain new and useful Im roveme nts in Fire- Alarms; and I do here y declare that the following is a full, clear, and exact descrlption of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. I

My invention relates to automatic firealarms.

The object of my invention is to provide a simple and inexpensive apparatus by means of which when a change of temperature occurs in an apartment such change may be noted at a given point removed from the apartment and by which an alarm may be given showing the location of the apartment in which the change of temperature occurs; and my invention consists of the construction, combination, and arrangement of parts, as herein illustrated, described, and claimed.

In the accompanying drawings, forming a which drawings similar reference characters designate corresponding parts, and in which Figure 1 is a vertical section through a portion of a building, showing the ap lication of my invention. Fig. 2 is a side e evation of the supportingbracket and movable parts of my invention. Fig. 3 is a fragmentary detail in enlarged side elevation.

Referring to the drawings, 8 designates a bracket secured in any suitable way to a wall 9 and provided with an extension 10, preferably integral therewith. Suitably su ported on the extension 10 is a plurality o' disks 11, formed from an expansible metal, which will readily expand and contract under the action of atmospheric variations of temperature. Dis osed on the disks 11 is an expansible meta rod 12, supported by the grooved members 13, which enga e the plates 13, encircling said rod 12. T e outer end of the extension 10 is provided with a conductor 14, provided on its free extremity with a contactpIoint 15, preferably of a flexible character.

inged to the bracket 8 at a suitable dis tance above the extension 10 is an arm 16,

provided on its free extremity with a contact 17, preferably of a flexible character, and provided intermediate of its ends with a boss 18, having an opening provided with interior screw-threads, through which is projected a screw 19, rovided at its lower end with a recess 20, ac apted to engage over the-point 21 of the upper end of the rod 12. From the conductor 14 there is carried a line 22 to an annunciator 23, disposed at an suitable point and of the ordinary form 0' construction, which may be purchased on the open market. From the contact 17 on the hinged extension 16 is run a line 24 to said annunciator, said line being in electrical connection with a battery 25 and the circuit being closed by the contact-points 15 and 17. In the operation of the device a change of temperature causing the disks 11 to ex and forces the point 21 of the rod 12 into t e recess 20 of the screw 19 and carries the hinged extension upward until the contact-point 17 there on strikes the contact-point 15 of the conductor 14, and thereby closes a circuit, said circuit actuating the annunciator 23 in the well-known manner.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an apparatus of the character described, thecombination comprising a bracket having'a rigid arm thereon, a plurality of disks on said arm, ,a rod disposed on the disks, rod-supporting members carried by the rigid arm, an arm hinged to said bracket, an adjustable member on said hinged arm and adapted to contact with said rod, and an annunciator in electrical connection with said arms.

2. In an apparatus of the character described, the combinationcomprising a bracket having a rigid arm thereon provided with a contactpo1nt, a plurality of disks on said arm, a rod disposed on the disks, rooved rod-supporting members carried by time rigid arm, an arm hinged to said bracket provided with. a contact-point, an adjustable member on said hinged arm and adapted to contact "with said rod, and an annunciator in electrical connectionwith said arms.

3. In an apparatus of the character described, the combination comprising a bracket having a rigid arm thereon, a plurality of expansible disks on said orm, mi expansible rod nunciator in electrical connection with said disposed on the disks, grooved rod-sup orting members carried by the rigid arm, p ates carried by the su porting members and adapted to support t 1e rod, an arm hin ed to said bracket, a screw rojected throug said hinged arm and provi ed with a recessed ex id adapted to contact with said rod and an an arms. 1 o In witness whereof I have hereunto set my hand in the resence of two Witnesses.

AIEFRED EDWARD WATTS; Witnesses:

M. KELSALL, EDWD. ELWELL; 

